Where can you change the units of a part in SolidWorks?

The units of a part in SolidWorks can be changed in the Document Properties under Options. This area specifically allows users to customize settings for the current document, including unit measurements for length, mass, and angles, among others. When accessing Document Properties, users can navigate to the "Units" section, where they can select the desired measurement system (like Imperial or Metric) to apply to the part they are working on.

This option is particularly important because it not only affects the display of measurements in the drawing and model environments but also influences how dimensions and features are interpreted within SolidWorks. This ensures that the design process aligns with engineering standards or project specifications.

The other potential sources for unit settings relate to broader or different contexts within SolidWorks, but the Document Properties is specifically tailored for controlling the units of a particular part or assembly document.